Smoke-box of locomotive-engine and similar boilers.



PATENTED Nov. 19, 1907.

s. s. YOUNGNUSBNND.V SMOKE BOX 01 100011011171: ENGINE AND SIMILAR-LBOII-,ERN

APPLICATION FILED JULY 25. 1906.

4 SHEETS-SHEET 1.

PATENTED NOV. 19, 1907.

S. S. YOUNGHUSBAND. SMOKE BQX 0F LOGOMOTIVE ENGINE AND SIMILAR BOILERS.

APPLICATION FILED JULY 25. 1906.

4 SHEETS-SHBBT 2.

7. 0 9 l 9y l V. O N D E T N E ml A P l D N A `B S U H G N U 0 Y QM S 1.. 5 .5 1l 7 8 nu N SMOKE BOX 0F LOCOMOTVE ENGINE AND SIMILAR BOILERS.

APPLICATION FILED JULY 26, 196,

4 SHEBTS-SHBBT 3- No. 871,551. PATENTED NOV. 19, 1907.

S. S. YOUNGHUSBAND.

SMGKE BOX OF LOGOMOTIVB ENGINE AND SIMILAR BOILERS.

PPLIUATION FILED JULY Z5. 1906.

@SHEETS-SHEET 4.

SAMUEL SMITH YOUNGHUSBAND, OF DARLINGTON, ENGLAND.

SMOE-BOX OF LOCOMOTIVE-ENGIN AND SIMILAR BOILERS.

Specification of Letters Patent.

Patented Nov. 19, 1907.

Application liled July 25| 1906. Serial No. 327664.

T 0 all whom- 'it 'may conf fra:

Be it known that l, SAM Uni. Siiirn YOUNG- HUSBAND, a subject ol" the King of Great Britain, residing at Granville Terrace, Woodlands Road, Darlington, in the county of Durliam,.England, engineer', have invented certain new and useful improvements in or Relating to tlieSnioke-Boxesot' Locomotive- Engine and Similar Boilers, el which the iollowing' is a specification.

The`priniary object of iny invention is to prevent the accumulation oic ashes in the smoke-boxes of locomotive engine and similar boilers, `a further object being to diminish the risk of the hot cinders ejected from the chimney setting fire to surrounding objects.

To these ends my invention consists essentially in providinr ejector apparatus whereby the ashes whic pass into and tend to settle at the bottom of the smoke-box will be continuously and automatically removed therefrom by the exhaustive action of the blast, the apparatus whereby this eil'ect is produced being adapted to cause the larger cinders to become broken up or reduced in size so that their capability ci setting fire to objects upon which they may chance to ali ht will be reduced to a minimum.

I1 thev accompanying drawings Figures 1 and 2 are longitudinal and transverse vertical sections o'l the smoke-box and adjacent parts of a locomotive engine having inside cylinders` showing the applicalion et the invention. Fig. 3 is a 'view similar to Fig.` 2 showing the application of the invention to a locomotive engine having outside cylinders. Figs. 4t and 5I are horizontal sections near the base and above the top ot the petticoat pipe respectively, as shown in Figs. 1 and 2, and

Fig.4 6 is a section oi' the blast pipe shown in Fig. 3, taken on the central longitudinal verf tical plane ol the engine.

Similar letters of reference denote corresponding parts throughout the drawings.

According to my invention the blast pipe A is surrounded by a s o-called pctticoat pipe B having a diameter sullicicnt to leave a somewhat narrow annular space C -between the two pipes, the petticoat pipe B,

preferably conforming tc the usual upwardly tapering form of the blast pipe A as in Figs. 1 and 2. The petticoat pipe B extends from a short distance above the 'door l) of the smoke-box (where it is suitably bell-mouthed 'asat b) to a short distance beyond the upper end or nozzle ol the blast pipe, where its diameter is contracted to approximately that of the meutbf the blastV pipe, the blast and petticoatpipes thus forming in combination an ejector apparatus whereby the ashes, cinders etc. lodging at the bottom ofthe smoke-box will be drawn up into the annular .space between the two pipes in consequence of the partial vacuum created in said space by the exhaustive action of the blast, and will be ejected along with the latter through the chimney E.

For the purpose of the present invention the iloor D of the smoke-box is downwardly inclined from all directions towards the base of the blast pipe A so as to constitute in effect a hopper whereby the cinders etc. which lodge upon it may be caused to descend 'automatically to a position immediately beneath and around the flaring mouth b of the petticoat pipe, whereby their accumulation within the smoke-box Will be eflectually prevented. The iloorl) may be formed of sheet iron covered with cement `0r fire-clay on its upper surface, and supported in any convenient manner, care being taken to avoid obstruction of any' of the lire tubes F of the boiler.

The annular opening between the upper ends of the two pipes A and B may be made of such -liorin that the larger cinders will becoinc broken u or reduced in size in passing through it, ani` being thus rendered capable of cooling more rapidly on exposure .to the atmosphere, will cease to be such sources of danger as usual.

In order to insure that the larger cinders and other solid matters, which pass with the blast from the tire-box into the smoke-box, shall be prevented from reaching the chimney E except by way of the ejector a paratus, a screen may be employed whcreliy the cindcrs etc. drawn from the {ire-box will be arrested and caused to fall to the-bottoni D .et the smoke-box, whence they will be a .flange t en theouter edge ol a tray H i which surroundsthe upper end of the-petticoat pipe B so as to close the lower end of the cage. The rods forming the cage G are set sulliciently close together to prevent any but the smallest cindeis etc. from passing ney E directly.

` to be a between them and thus reaching the chim- The tray H is dished to form an annular channel whose bottom is pierced with narrow segmental slots as at j through which any matter that may accumulate within the cage can be swept out in cleaning the apparatus.

A removable nozzle (shown iin Figs. 1 and 2) may be provided on the upper end of the blast pi e for enabling the area of the latter djusted a's may be found necessary in order to produce the best effect whether as an ejector or as a means of breaking up the larger cinders which pass through the pett1- coat space C.

For the purpose of assisting in the discharge of ashes etc. from the smoke-box and clearing the chimney top of smoke, more esthe - war as at within or just beneath the flaring vlower mouth of the pecially when thelplast'happens to be weak' or the engine is not runmng, a row of upwardly directed jets of live steam may e provided 1n connection with the blast pipe,

or the petticjat pipe, or both, the jets beingv in either case lsupplied with steam from an annular passage surrounding the pipe and suitably control of a valve. The ldischarge of live steam from the jets on the blast pipe will tend to create avacuum within the petticoat space 'and thus draw up and dise charge ashes from the vbottom of the smokebox, whilethe jets on the petticoat pi e will assist in clearing the chimney of smo re.

In the examples illustrated, the upper end of the petticoat pipeV B is surrounde by an annular'steam passage K connected with the boiler steam space by meansv of a pi eM controlled by a valve m, the passage ghaviny a number of small upwardly opening ho es through-which steam may be allowed to issue around the mouth of the petticoat pipe so` as to assist etticoat space C. 'A similar row of updly directed steam jets may beprovided petticoat pipe for the purpose of quickening the draft through the r space C.

ln order the better to insure the effectual j quenching of any sparks or incandescent cinders as they escapel to the chimney E, an annu lar row of upwardly directed water jets may be provided as at N around the upper end of the petticoat' pipe, asu plementary similar row of water jets being i desired provided as at 'n around the lower part of the interior of the chimney E. All the jet apparatus, whether steam or water, would be underthe control of valves whereby to regulate the supply of live steam, or of water under pressure from the boiler, to the jets.

in the arrangement shown in Figs. 3 and 6,

the blastpipe is divided immediately below pair of laterally divergent breeches pipes 7 A1 Al, so .that the petconnected to the boiler'under' the,

' per-shaped lin creating a vacuum withiny closing the two:

4 integrated before ticoat pipe l can only actually surround the upper extremity or nozzle portion A of the blast pipe. This however is sufficient to constitute the requisite ejector nozzle, the

crease the exhausting effect at this end of the petticoat pipe, its flaring lower end may be l partly filled by an upwardly tapered plug O which extends into the bell mouth b from beneath and serves also to support th'e annular pipe L fronr which issue the lower row yofv` The understeam jets before referred to. side of the bifurcation of the pipe A where the branches A A1 meet `is also preferably made to taper downwards so as to present a `knife edge p to the ascending current within the pipe B1 into the two branches b1 b1. 1n other respects the arrangement shown in Fi@ 3 is substantially similar to that shown'in lli-gs. 1

and 2.

Claims.

1. In ejector apparatus for effecting the removal of the ashes from the smoke-box of a locomotive boiler, the combination of a blast pipe, a petticoat pipe surroundinor the blast ipe at a distance therefrom, andl a smokeox inclosino' the two pipes and having a ho oor, the blast pipe being mounted on the lower part of the floor, whereby the cinders are caused' to collect about the lower vend of the petticoat pipe and the cinders thus collected are caused to pass between the two pipes by the action of the blast and become disintegrated before being finally ejected, substantially as speci-fied.

2. ln ejector' apparatus for effecting the and assist in dividing the streamY i removal of the ashes from the smoke-box of a locomotive boiler, the combination of a blast pipe, a p'ettcoat pipe surrounding the blast pipe ata distance therefrom, a smoke-box inipes and having a hoppere shaped floor, an a perforated steam pipeat the lower end of the blast pipe, whereby a supplementary forced draft is brought into operation at the lower end of the petticoat pipe for assisting in causing the cinders to pass between the two pipes and become disbeing ejected, substantially as specified. Y g

3. In ejector apparatus for effecting the removal of the ashes from the smoke-box of a locomotive boiler, the combination of a blast pipe, a petticoat pipe surrounding-the blast pipe at a distance therefrom, and provided at its upper end with a number of perforations connected with an annular conduit formed in the said upper end whereby an additional forced blast is brought int'o operation at the pipe, a p'etticoat pipe surrounding the blast pipe at a distance therefrom, and a perforated water pipe at the uppenend ofthe pet-y ticoat pipe for insuring the complete extinc tion of the cinders which have been disinte rated between the two pipes, before being inally ejected substantially as specified.

I 5. Hljector apparatus comprising a blast` pipe, a petticoat pipe surrounding the blast pipe at a distance therefrom and provided with a perforated annular tray atits upper end, a downii'ardly projecting chimney p oition, a circular cage connecting the upper end Vol' tno petticoat pipe with the cliiniiiey portion, and a smoke-box having a hoppershaped loor, the blast pipe being arranged in the center ol the said iloor so that the cinders are caused to collect around the blast pipe and be disintegrated between the two pipes and ejected substantially as specilied.

ljeetor apparatus comprising a petticoat pipe having' a reduced upper end and an enlarged lower end and provided at its up per end with an annular apertured tray and a thickened portion, the latter having?r formed in it an annular conduit and a number of p'erl'oratioiis connected therewith, a blast pipe surrounded at a distance by the petticoatpipe and partly inclosed at its up-` per end by the reduced end ol the pctticoat pipe, a downii'urdly projectingl chimney portion, a circular cage connecting;` the upper end ol' the pettieom pipe with the chimney portion, and a smoke-box' havinga hoppershaped floor lor disinteurating;` the ciiiders and ejcctiiug them l'roin the smoke-box, substantially as spcciied.

T. lljeclor apparatus comprisingl a petticoat pipe havingy a reduced upper end and an enlarged lower end and provided al. its upper end with an annular apertuied tray and a thickened portion, the latter having;I formed in it an annular conduit and a number of perforations connected therewith, a blast pipe surrounded. at a distance hy the petticoat pipe and partly inclosed at its upper end by the reduced end of the petticoat pipe, a

downwardly projecting chimney portion, a circular cage connecting the upper end of the petticoat pipe with the chimney portion, a

4sinoke-box having a hopper-shaped Hoor,

and a perforated steam pipe at the lower end of the blast pipe, for disintegrating the einders and ejecting them from the smoke-box, substantially as specifiedl S. lljector apparatus comprising a petticoat pipe having a reduced upper end and an enlarged lower end and provided at its upper end with an annular apertured tray and a thickened portion, the latter having formed in it an annular conduit and a number of perforations connected therewith,- a blast pipe surrounded at a distance by the pettiv coat pipe and partlyr in close'd at its upper end' by the-reduced end of the 'petticoat pipe, a downwardly projectingvcliiinney portion, a circular cage connecting the upper end of the petticoat pipe with the chimney portion, a smoke-box having 'a hopper-shaped floor, a perforated steam pipe at the lower end of the blastpipe, and an annular perforated water pipe `fitted on the upper end of the petticoat pipe, for disintegrating and extinguishing the cindeis and ejecting them from the smoke-box, substantially as speciiied.

9. liljector apparatus comprising a pettii coat pipe having a reduced upper end and a splayed out lower end and provided at its uppei end with an annular apertured tray and a thickened portion, the latter having formed iii it au annular conduit and a nuni` ber of perfoi'atioiis leading thereinto, a blast pipe consisting oi a pair ol breeches pipes li`avin T a common nozzle the nozzle iortion \Vitnesscs: p l DouoLAs l IAMiLToN Vii'rcu, NA'riiANiiiL llENRvllALo'r. 

